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Xhorse BMW Multi Tool CAS1/2/3/4/CAS4+ V7.7 Key Programmer

Item No. SK97
5 stars, 25 reviews.
Manufacturer: Xhorse
In Stock
Retail price:US$845.00
Buy it Now (1 pcs):US$799.00 You save US$46.00
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Estimated delivery time: 4-10 Days.See details »
23cm*16cm*5.5cm      ( Inch:9.06*6.3*2.17 )
Return for refund within 30 days,buyer pays return shipping.Read details »
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Any Questions? Get Technical Service.
1.This multi Tool supports key programming for BMW CAS1 CAS2 CAS3 CAS3+ CAS4 CAS4+ by OBD2 port.
2.Key Programmer for bmw has multi-function: key programmer, odometer correction, eeprom read and write, Synchronization Codes, and so on.

BMW Multi Tool V7.7 CAS1/2/3/4/CAS4+ OBD2 Key Programmer for 

Top reasons to get Multi Tool for BMW:

1. It is the most professional OBD2 key programmer for BMW,  verified by lots of customers.

2. Software Version: V7.7, software keep updating online.

3. Support BMW CAS4, CAS4+Encrypt Authorization. 

4. Get Free Encryption Authorization For BMW CAS4. 

Kindly note:

1. English only  

2. Before Run the Software,pls Connect Dongle to Computer

3. Supports BMW CAS4 programming,but needs BMW CAS4 adapter, item # SK97-B.

Multi Tool for BMW Function List:

1. Car access sytem dentification
3. Read/Write KM stored in CAS system(OBDII)
4. Read/Write synchronization codes stored in CAS system(OBDII)
5. Synchronize DME and CAS(OBDII)
6. Synchronize CAS and ELV(OBDII)
7. Prepare dealer key for CAS1/CAS2/CAS3/CAS+(support latest CAS3 verison)(OBDII)

8. Read/Restore CAS KEY information(OBDII)
9. Disable/Enable key with working key(OBDII)
10. Clear DTC and Shadow (OBDII)
11. Prepare dealer key with CAS eeprom dump
12. Unlock dealer key prepared with our software with CAS eeprom dump or KEY information
13. Change KM in CAS and instrument dashboard with file dump
14. Have key programmer, you can programm dealer key directly.

Pay attention to the function: Help->Device update. You can get the latest software version and firmware verion when you can access to internet 


BMW Multi Tool V7.7 Update tips:

1. Hungarian language added
2.5M48H file change mileage bug fixes
3.Wehn OBD reads key information, get remote frequency support and determine 315 LP Type
4. Other bug fixes

BMW Multi Tool V7.7 Update

1.Fix CAS4 make key procedure. If first make key not success, it can be use next time until it make success.
2.Normal bugfix

Multi Tool V7.5 Update tips:

1.Free for all user: Make dealer key for CAS4 encrypt version, support add key and lost all key. No need condor authorization.
2.Normal bugfix

Multi Tool V7.4 Update tips:

1. Fix the error that BMW CAS3+ smart key not work after generation. 
2. Key learning -> fix up smart key change, enable to fix the error that smart key not work.
3. Fix the error that EWS generate dealer key but sometimes not work. 
4. Fix other bug

Multi Tool Software Explanation:

1. Menu:

- Tool: you can choose language here, support "English" and "Chinese Simplified" Restart software to apply your settings.
- File Make Key: you can prepare dealer key with EWS and CAS EEPROM dump.
- Help: Device update. You can get your device and dongle id version and update it.

2. Protocal type:

Now BMT support there type of protocol: KWP-CAN BUS 100Kbps, KWP-CAN BUS 500Kbps, KWP-2000. "Auto Detect " function can help you to choose the right protocol.
After choose protocol okay, then press "Connect". If connected success. All CAS info will display in CAS Identification. Include CAS number, VIN, production date, etc.

3. EEPROM Function: Read EEPROM'Write EEPROM'Save File'Load File…

1.You should backup the CAS EEPROM before prepare dealer key. After succeed read EEPROM, please save it as back file. This step is
very important.
2.Now can’t read the whole EEPROM for cas3 system. But the main section is contained. It should be saved. When you read CAS EEPROM,
it will give tips as follow(Press ok to continue)

4. Odometer: 

Support read and change KM stored in CAS system.
Don't support to change KM in instrument. If you want to change the KM display in instrument. You should change KM in CAS system first. Then modify the KM in instrument manually.

5. Synchronization Codes:

1). CAS3 code-DME, CAS3code-EGS: Read and write DME and EGS code stored in CAS3 system.
2). Synchronize DME and CAS— this function will be useful while prepare dealer key or any other operation which cause can't start the engine.
3). Synchronize CAS and ELV — this function can help clear wheel errors

6. Key Learn

bmw key programmer bmw multi tool 2

1). Get Key Info: With this function you can get the key cutting, remote frequency, and key data.
2). Save Key Info: Save the read key info.
3). Load Key Info: Load the saved key info. To see the key data and prepare for write key info.
4). Write Key Info: Write the loaded key info into CAS system.
5). Make Dealer Key: You can prepare dealer key after you get key info successfully. Also you should choose the key position.
6). Add key: Add the new dealer key into CAS system. Some CAS system needs this step to start the engine.
7). Enable Key: Insert the current key into ignition switch, press "Enable Key". The key after current key will be enabled.
8). Disable Key: Insert the current key into ignition switch, press "Disable key". The key after current key will be disabled.
9). Clear DTC: Before prepare dealer key and after it you can use this function to clear DTC.
10). Clear Shadow: Before prepare dealer key and after it you can use this function to clear Shadow.

7. File Make Key

1). Choose CAS or EWS type.

bmw key programmer bmw multi tool file make key 2

2). Load the choose EEPROM file you will get the make dealer key window.

3). Choose key position and press "Make Dealer Key" button. Flow the given tips to prepare dealer key. After succeed you can save the new EEPROM dump file.
- For EWS1, EWS2, EWS3, EWS4, CAS1, CAS2, CAS3 type the prepared dealer key can start the engine directly.
- For some CA3+ type you need to write back the new dump file into car.

4). CAS3 encrypt data, only OBDII prepare make key is support for CAS3 encrypt data.

bmw key programmer bmw multi tool file make key 5

8. Device Update

Open this window after connect to internet. You can see the latest software version, firmware version, dongle version. You can go to our website for further information. After succeeded update device firmware, must reconnect the hardware to computer

bmw key programmer bmw multi tool update

1.Device Info: Get dongle and hardware SN and version

bmw key programmer bmw multi tool update 1

2.Device Update: This function can update the dongle and device

bmw key programmer bmw multi tool update 2

bmw key programmer bmw multi tool update 3

Process to prepare dealer key:

1. On main window choose “Connect” to auto detect the current car protocol and get the CAS info.
2. On main window choose “Read EEPROM” to read the CAS EEPROM file and save it.
3. On main window choose “Key Learn” button to get key learn window.
4. On Key Learn window choose “Get Key Info” to get the key info stored in CAS system.(picture 2).
5. Choose “Save Key Info” button to save the read key info for backup.
6. Check the connection between programmer and device. Keep connection while make key process.
7. Put new blank key into the center of programmer.

8. Choose the position where you want to suit the key.
9. Press “Make Dealer Key” to prepare dealer key. After succeed you will get (picture 3)
"Key make okay and locked. Please use it start the car. If can’t start engine, use “Add Key” function add the new dealer key to CAS system.” Once can start the engine, go to step 13.
10. Put the new dealer key into programmer. Use “Add Key” function to add the key to CAS system.
After that you will get (picture 4):”New dealer key success written to CAS system. You can start engine with the new key now. If can’t please use the original working key first.”
11. Please return to main widow and use function “Synch DME-CAS” to synchronize DME (ECU) with CAS.
12. Use “Synch CAS-ELV” to clear wheel errors.
13. Enter to key learn window use “Clear DTC” and “Clear Shadow” function clear all error sin CAS system.

While prepare dealer key process. Once you get the tips like picture 1, remove the key from ignition switch, if key has keyless, take the key out of car.

xhorse bmw key programmer

bmw multi tool

bmw multi tool key programmer

bmw multi tool bmw cas programmer

Multi Tool for BMW Specification:

1. Operating Temperature: -20 to 70 °C ( -4 to 158 °F )
2. Storage Temperature: -40 to 85 °C ( -40 to 185 °F )
3. Diagnostic Interface: 16 PIN
4. USB Interface: USB 2.0
5. Power: DC 5 V - 12 V
6. Consumption: 1 W
7. Dimensions: Length 95 mm, Width 49 mm, Height 28 mm

Packing list:

1 x BMW Multi Tool main unit
1 x USB dongle

BMW Multi Tool Connection Picture:



1.Q:Can you tell me if this tool can program used keys or just new key?
A:BMW keys only can be programming once,this tool can only do new keys,can not program used keys.

2."Device not connected"Error
Information: Hardware not connected to PC with USB port.
Solution: Plug device to USB.


For any question, please contact us at:


Email: sales@careucar.com       
MSN:  careucar@hotmail.com
Skype: careucar
Hot line: 0086-18359214901/ +8615759264783

If you have any problems, please do not hesitate to contact us.

How to make purchase on CareUcar?
shopping process in careucar

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